Lower front bumper



FIG. 1 is a front perspective view of a lower front bumper showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

It will be understood that the broken lines shown in the drawings illustrate portions of the lower front bumper that form no part of claimed design. 

CLAIM The ornamental design for a lower front bumper, as shown and described. 